1.What does a person's ecological footprint represent?

2.Why is an ecological footprint measured in land area?

3. Calculate your ecological foot print online and write answer.

4. Why do you think the score for one portion of beef is 150 while the score for one portion of vegetables is 20? What is the difference between these two food sources?

5. reusing or repairing items contributes a score of -20 to your ecological footprint. Why do these activities reduce your impact on the environment?6. The ecological footprint that you calculated is only an estimate. Name 1-2 additional factors that may contribute to a person's ecological footprint.

There is a finite amount of biologically productive land on Earth. Estimate the average amount of land available per person by dividing the total hectares of productive land on Earth by the total human population. The amount of land available per person is an "Earth Share"

Total area of biologically productive land on Earth: 12,000,000,000 hectares

Total human population (in 2003): 7,120,697,433

Earth Share ________________ hectares / person

1.How does your ecological footprint compare to an Earth Share?

2.Name one way a person with a lifestyle similar to yours could decrease their ecological footprint.

3.A typical American's ecological footprint is 10 hectares. To decrease our collective ecological footprint, we must make both personal and societal changes. Name one change the United States could make to decrease our environmental impact.